libc: enable IPTOS_MINCOST, fixup gethostbyaddr() proto.
Make netinet/ip.h have IPTOS_MINCOST which matches what
kernel/common/linux/ip.h has to say.
Fixup gethostbyaddr() 1st arg to match what man has to say.
Change-Id: Iff9647d4a46ea88b1fc32163eb69bb9b27cdf370
diff --git a/libc/include/netinet/ip.h b/libc/include/netinet/ip.h
index 541905c..629ed77 100644
--- a/libc/include/netinet/ip.h
+++ b/libc/include/netinet/ip.h
@@ -83,7 +83,7 @@
#define IPTOS_LOWDELAY 0x10
#define IPTOS_THROUGHPUT 0x08
#define IPTOS_RELIABILITY 0x04
-/* IPTOS_LOWCOST 0x02 XXX */
+#define IPTOS_MINCOST 0x02
#if 1
/* ECN RFC3168 obsoletes RFC2481, and these will be deprecated soon. */
#define IPTOS_CE 0x01 /* congestion experienced */